This game was developed for the first “Dirty Rectangles Showcase” featuring not-one-player games with the theme of “Growth”. HAOA is a game about teamwork and growth, where players grow a tree by feeding it nutrients from its roots. HAOA features procedurally generated trees that grow from saplings and change their growth based on the different nutrients they receive during the course of one play. The game concept was originally designed by Eric McQuiggan, the sound FX and music was done by Derek Ledoux, and all the programming was done myself. HAOA was developed in C# with the xna.